The library name is quite misleading. I was expecting extensions to the CoffeeScript language. But instead this is just a bunch of javascript functions written in coffeescript for use with JQuery. A better name might be "JQuery helpers".<p>A nicely designed site though.
A lot of these seem really useful -- a nice set of things I've grumbled at having to write myself before as well as things that I haven't had a need for but I could very easily see being useful.<p>Out of curiosity, is there a reason you're actively marketing it as CoffeeScript helpers? For people using it as a drop-in library, it shouldn't make a lick of difference whether it's written in CS or vanilla JS, especially since you have the compiled JS in the GitHub repo. That isn't to say that you should be obscuring the fact, but right now the name says to me that being written in CoffeeScript is a significant part of the value being provided, which doesn't really seem to be the case.
These all look pretty useful but they all seem kind of unrelated and the project strikes me as kind of unfocused. It would be cool if the these features were added to a larger project like Bootstrap.
I generally don't get much value out of things that look like pet libraries on here, but there are a few utilities in here that I have genuinely missed having in the past, so kudos there.<p>Completely offtopic though, the 'drip' icon actually bugs me, and I actually had to stare at it for a minute before I realized why -- you've got brewed coffee dripping from a pristine filter. S'weird.